Operating instructions
VENTILATOR HOOD 
HOOD SECTION - ANSUL® FIRE SUPPRESSION SYSTEM 
13 
IMPORTANT: 
All servicing of the fire 
suppression system to be 
performed by an 
authorized Ansul® agent 
only. 
1. Actuation of the Ansul® system will cause the pressure cartridge seal 
  to be punctured, which will pressurize the 1.5 gallon media tank. Fire 
  suppression media will be forced through the piping where it will spray 
  from the various nozzles. 
2.  The cooking appliance surface is protected by two type 290 nozzles. 
3.  The plenum area between the filters and the fan is protected by a 
  single type 1W nozzle. 
4.  The pressure integrity of the plenum bulkheads is maintained by the 
  use of compression fittings at the piping penetrations. 
5.  Nozzles are protected from grease contamination by press-on silicone 
 rubber caps. 
SV504 SvcManual WV-4H(RW) 
HOOD ASSEMBLY
VIEWED FROM REAR
PLENUM
NOZZLE ASSY
APPLY SEALANT TAPE
I
N
S
I
D
E
O
U
T
S
I
D
E
CABINET WALL
SEAL WITH
TEFLON TAPE
SEAL WITH
TEFLON TAPE
FIBER
WASH ER
IS ALWAYS
ON THE INSIDE
TYPICAL BULKHEAD
FITTING
PR ESSURE
CARTRIDGE
FIRE SUPPRESSION
MEDIA TANK
NOZZLE 1W
FLEX
HOSE
APPLY SEALANT TAPE
UNDER-HOOD
MANIFOLD
NOZZLE 290










